Abstract:In view of the damage of the waterway regulation structure under the new water-sediment condition,we take revetment works as example to simulate the erosion and siltation characteristics of the revetment works under different hydrodynamic strength and different sediment saturation by the generalized flume experiment. The test results show that with the increase of the ratio of mean velocity in section to the incipient velocity of sediment (U/Uc),the frontal erosion of the revetment works increase exponentially. With the increase of the ratio of sediment concentration to sediment carrying capacity (S/S*),the frontal erosion of the revetment works decrease in a logarithmic manner. When U/Uc>3 or S/S*<40%,the scouring range and scouring depth of the revetment front increase rapidly. Based on this,when U/Uc>3 or S/S*<40%,the monitoring of the interannual and intraannual changes in the surrounding works’ flow velocity should be strengthened. The research results can provide a technical support for the design of waterway regulation engineering and the maintenance work of waterway regulation structures.